Question

What's an " en passant capture " ?

What are the necessary conditions for that move ?

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Answer 1

The en passant capture is a move in chess. It allows a pawn to capture a horizontally adjacent enemy pawn that has just advanced two squares in one move.

Answer 2

A pawn attacking a square crossed by an opponent's pawn which has advanced two squares in one move from its original square may capture this opponent's pawn as though the latter had been moved only one square. This capture is only legal on the move following this advance and is called an 'en passant' capture.

Step-by-step explanation:

I play a lot of chess.

xd.